From 33a1a254457193eb4b61c8921f55d4744d58ccad Mon Sep 17 00:00:00 2001
From: Phil Smart <philip.smart@jisc.ac.uk>
Date: Tue, 16 Apr 2024 14:58:00 +0100
Subject: [PATCH] Fix negation in check_algsupport ruleset for alg

From commit hash ukf/ukf-testbed/517ac995365d5151f5e954f4c6f5eea05e2e3bf4

See ukf/ukf-meta#416 for details
---
 mdx/_rules/check_algsupport.xsl | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mdx/_rules/check_algsupport.xsl b/mdx/_rules/check_algsupport.xsl
index b9a0962d..273b33f5 100644
--- a/mdx/_rules/check_algsupport.xsl
+++ b/mdx/_rules/check_algsupport.xsl
@@ -42,7 +42,7 @@
     <!--
         2.4 Check for misplaced SigningMethod or DigestMethod elements.
     -->
-    <xsl:template match="alg:*[not(parent::md:Extensions)]">
+    <xsl:template match="alg:*[count(parent::md:Extensions)=0]">
         <xsl:call-template name="error">
             <xsl:with-param name="m">
                 <xsl:text>alg:</xsl:text>